Bonjour Sylvain, merci de votre réponse.
Mon domain est:
https://www.scootermarket.fr
Je suis au version php 5.6, et si j'ai bien compris, c'est celui qui corresponde à mon version de Prestashop: 1.5.2.0. Je ne pense pas que je peux passer en version 7.0
Voici les cinq derniers lignes de l'Apache error.log:
[Fri Oct 19 21:03:18.813357 2018] [proxy_fcgi:error] [pid 24898:tid 140095516501760] [client 207.46.13.158:6501] AH01071: Got error 'acter class at offset 24 in /htdocs/classes/Tools.php on line 984\nPHP message: PHP Warning: preg_replace(): Compilation failed: invalid range in character class at offset 24 in /htdocs/classes/Tools.php on line 984\nPHP message: PHP Warning: preg_replace(): Compilation failed: invalid range in character class at offset 24 in /htdocs/classes/Tools.php on line 984\nPHP message: PHP Warning: preg_replace(): Compilation failed: invalid range in character class at offset 24 in /htdocs/classes/Tools.php on line 984\nPHP message: PHP Warning: preg_replace(): Compilation failed: invalid range in character class at offset 24 in /htdocs/classes/Tools.php on line 984\nPHP message: PHP Warning: preg_replace(): C
Merci par avance de tout conseil que vous pourriez m'accorder.